Microwave oven accessory



FIG. 1 is a perspective view of a microwave oven accessory, showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a back view thereof; and,

FIG. 6 is an enlarged right side view thereof; the left side view being a mirror image thereof. 

CLAIM The ornamental design for a microwave oven accessory, as shown and described. 